Automagic: Make cache period longer and configurable

Author: ikelos

volatility3/framework/automagic/symbol_cache.py

@@ -157,10 +157,10 @@ class SqliteCache(CacheManagerInterface):
     _required_framework_version = (2, 0, 0)
     _version = (1, 0, 0)
 
-    cache_period = '-3 days'
 
     def __init__(self, filename: str):
         super().__init__(filename)
+        self.cache_period = constants.SQLITE_CACHE_PERIOD
         try:
             self._database = self._connect_storage(filename)
         except sqlite3.DatabaseError:

volatility3/framework/constants/__init__.py

@@ -63,6 +63,9 @@
 CACHE_PATH = os.path.join(os.path.expanduser("~"), ".cache", "volatility3")
 """Default path to store cached data"""
 
+SQLITE_CACHE_PERIOD = '-1 month'
+"""SQLite time modifier for how long each item is valid in the cache for"""
+
 if sys.platform == 'win32':
     CACHE_PATH = os.path.realpath(os.path.join(os.environ.get("APPDATA", os.path.expanduser("~")), "volatility3"))
 os.makedirs(CACHE_PATH, exist_ok = True)